CN103049130A - Staggered driving touch sensing method, touch sensing module and display - Google Patents
Staggered driving touch sensing method, touch sensing module and display Download PDFInfo
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- CN103049130A CN103049130A CN2012103857900A CN201210385790A CN103049130A CN 103049130 A CN103049130 A CN 103049130A CN 2012103857900 A CN2012103857900 A CN 2012103857900A CN 201210385790 A CN201210385790 A CN 201210385790A CN 103049130 A CN103049130 A CN 103049130A
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- 239000004973 liquid crystal related substance Substances 0.000 claims description 5
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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Abstract
A touch sensing method of staggered driving is executed on a sensing unit which is coupled with a plurality of first direction leads which are mutually parallel, the sensing method emits a detection signal from at least one first direction lead and receives the detection signal from at least another first direction lead so as to sense parameters of electric charge, capacitance, magnetic flux, electromagnetic induction, voltage, current, frequency and the like of the first direction lead, and the position, distance, touch height and touch point of a user which are induced and changed by a finger touching a panel are judged by numerical operation. The invention also discloses a touch sensing module and a display.
Description
Technical field
The present invention relates to a kind of inducing method, refer to especially touch control inducing method, touch-control sensing module and display that a kind of alternating expression that is applied to the touch-control sensing display drives.
Background technology
Contact panel (touch screen panel) is a kind of panel that is available for users to via finger (finger) or stylus (stylus) touching (touch) induction, the user can utilize and write character, picture on the contact panel, perhaps the portrait (icon) in the picture is carried out instruction etc., and general common contact panel is divided into electromagnetic induction pattern and capacitive sensing pattern.
For the display of capacitive sensing pattern, be divided into again self-tolerant induction (Self Capacitance Sensing) and mutual appearance formula induction (Mutual Capacitance Sensing).Consult Fig. 1, display 900 for existing self-tolerant induction, wherein comprise several first lines of induction 911, second line of induction 912 that several and first line of induction 911 are interlaced, and two sensor circuit 913 that is respectively coupled to first line of induction 911 and second line of induction 912, sensor circuit 913 can utilize same first line of induction 911 (or same second line of induction 912) emission and receive and detect signal, electric current with induction same first line of induction 911 (or same second line of induction 912), frequency, magnetic flux change is to learn the position of user's finger touch.
The sensor circuit of appearance formula induction then is to utilize 911 emissions of first line of induction to detect signal mutually, and receives this detection signal by another second line of induction 912 of other direction, to induce the position of user's finger touch.
Yet the present invention will propose the touch control inducing method of another kind of alternating expression driving and carry out the touch-control sensing display of the alternating expression driving of this inducing method, to reach better display frame and the control of touch-control scanning.
Summary of the invention
The touch control inducing method that the object of the present invention is to provide a kind of alternating expression to drive.
The touch control inducing method that alternating expression of the present invention drives, sensing cell in a touch-control sensing display is carried out, this sensing cell is coupled to several mutually side by side and the first direction wire that extends along a first direction, this inducing method detects signal from least one first direction wire emission one, and receive this detection signal from another first direction wire at least, electric charge with this first direction wire of sensing, electric capacity, magnetic flux, electromagnetic induction, voltage, electric current, the parameters such as frequency judge that with numerical operation the user responds to the position of variation because of the finger touches panel, distance, touching height and touch points.
The mode that the emission of this inducing method and reception detect signal can have following several: (1) detects signal from a first direction wire emission, and receives the detection signal from another first direction wire; (2) detect signal from a first direction wire emission, and receive the detection signal from other several first direction wires; (3) detect signal from several first direction wire emissions, and receive the detection signal from an other first direction wire; (4) detect signal from several first direction wire emissions, and receive the detection signal from several other first direction wires.And in (4) the kind mode, the first direction wire that emission detects signal with receive the first direction wire that detects signal can also be at least part of interlaced with each other, adjacent, at a distance of a determining deviation.Therefore, above-mentioned four kinds of modes can both sensing first direction wire the parameter such as electric charge, electric capacity, magnetic flux, electromagnetic induction, voltage, electric current, frequency, and emission detects the first direction wire of signal and receives can be adjacent one another are between the first direction wire that detects signal, the at least one first direction wire of also can being separated by is to save scanning times and time.
In addition, several first direction wires also can be divided at least four wire groups, and this inducing method can be penetrated the detection signal from the mass-sending of one first wire first, and receive the detection signal from one second wire group, penetrate the detection signal from this second wire mass-sending more afterwards, and receive the detection signal from a privates group, penetrate the detection signal from this privates mass-sending more afterwards, and receive the detection signal from a privates group; Or, penetrate the detection signal from the mass-sending of one first wire first, and receive the detection signal from one second wire group, penetrate the detection signal from privates mass-sending more afterwards, and receive the detection signal from a privates group; Or, penetrate the detection signal from the mass-sending of one first wire first, and receive the detection signal from a privates group, penetrate the detection signal from the mass-sending of one second wire more afterwards, and receive the detection signal from a privates group, so also position, distance, touching height and the touch points that occurs in induction line and change judged in the COUNTABLY VALUED computing.
In addition, above-mentioned these at least four wire groups, wherein, but the first direction wire part among this first wire group, this second wire group, this privates group and these privates group is overlapping, overlapping or non-overlapping.
In addition, another object of the present invention is namely in the touch-control sensing module that the touch control inducing method that can carry out above-mentioned alternating expression driving is provided.
The touch-control sensing module that this alternating expression drives, comprise several mutually side by side and the first direction wire that extends along a first direction, an and sensing cell that is coupled to described first direction wire, sensing cell detects signal from least one first direction wire emission one, and receive this detection signal from another first direction wire at least, with sensing should detect signal through parameters such as the electric charge in path, electric capacity, magnetic flux, electromagnetic induction, voltage, electric current, frequencies.
The touch-control sensing module also comprises several second direction wires that is coupled to sensing cell, described second direction wire mutually extends side by side and with a second direction that intersects with first direction, described second direction wire and described first direction wire be interlaced to have angle but is not conducted, sensing cell is also launched another from least one second direction wire and is detected signal, and receive from another second direction wire at least and to detect signal, with sensing detect signal through parameters such as the electric charge in path, electric capacity, magnetic flux, electromagnetic induction, voltage, electric current, frequencies.In more detail, described first direction wire or described second direction wire can be the common structure wire on the active array, can comprise several data lines on the active array, gate line, common-battery polar curve, boost line, bias line, read line etc.
In addition, the first direction wire that emission detects signal has one first image, structure, the first direction wire that detecting detects signal has one second image, structure, described the first image, structure and described the second image, structure can be strip, rhombus, latticed and square etc., and between the two can be identical, can be not identical yet.
Described second direction wire also as described the first direction wire be divided into several wires group, applicable above-mentioned touch control inducing method.
Certainly sensing cell also can be launched this detection signal from several incomplete adjacent first direction wires, and receives this detection signal from other several incomplete adjacent second direction wire; Or launch this detection signal from several incomplete adjacent second direction wires, and receive this detection signal from other several incomplete adjacent first direction wire.The touch-control sensing display that the present invention also provides a kind of alternating expression to drive wherein comprises a display module in order to display frame, and above-mentioned touch-control sensing module.
This display module comprises a first substrate and a second substrate, and this touch-control sensing module can be located at this first substrate inboard, this first substrate outside, this second substrate inboard, and the position in this second substrate outside.
This touch-control sensing display can be liquid crystal display, Organic Light Emitting Diode, electronics swimming method display, electric wetting display.
This housing comprises a protection panel, and described first direction wire and described second direction wire are positioned at this protection panel.
In addition, display module comprises a common electrode layer, and display also comprise one be coupled to this common electrode layer and ground or and large conductor or and large electric capacity object between grounding switch, control module is controlled not conducting of grounding switch when sensing cell receives this detection signal, make common electrode layer earth-free or do not connect large conductor or do not connect large electric capacity object; Control module is when display module display frame, and control grounding switch conducting forms common electrode ground connection or connects large conductor or connect large electric capacity object.
In addition, the touch-control sensing display that alternating expression of the present invention drives also can be a marginal electric field (Fringe Filed Switching, FFS) framework or horizontal cross electric field (In Plan Switching, IPS) framework, this type of touch-control sensing display comprises a display module in order to display frame, one touch-control sensing module and one is coupled to the control module of touch-control sensing module, the touch-control sensing module comprises several interlaced and disjoint first direction wire and second direction wires, one sensing cell, one induction call wire, and several are coupled to described first direction wire and induction call wire, second direction wire and the on-off circuit of responding to call wire, described on-off circuit is used to one and makes described first direction wire (or second direction wire) and the conducting state that is electrically connected of induction call wire, and one makes described first direction wire (or second direction wire) switch with responding between the nonconducting state that call wire is not electrically connected.This control module is controlled this display module during one shows the time, during an electromagnetism touch-control sensing, control module is with the on-off circuit conducting of at least two first direction wires of correspondence, so that this two first directions wire is electrically connected the induction call wire and forms an electromagnetism sensing loop; In a capacitance touching control during sensing, control module switches to nonconducting state with described on-off circuit, so that sensing cell is carried out the touch control inducing method that above-mentioned alternating expression drives, with parameters such as the electric charge of the described direction wire of sensing, electric capacity, magnetic flux, electromagnetic induction, voltage, electric current, frequencies, and numerical operation judges that the user responds to position, distance, touching height and the touch points of variation because of the finger touches display module, reaches the effect of touch-control scanning Optimization control of the present invention.
In more detail, described induction call wire is common-battery polar curve (common electrode), and described on-off circuit is arranged in the plan picture element region (dummy pixel region).
This touch-control sensing display comprises a housing, and one be located in this housing and be coupled to the backlight of this control module, this control module can be during this electromagnetism touch-control sensing, this capacitance touching control closes this backlight or put dark between sensitive period, and during this shows this backlight is opened.
This control module is according to an order, according to a determining deviation, corresponding the first wire group of sequentially conducting or the second wire group's on-off circuit, to form several electromagnetism sensing loops, and this sensing cell sequentially transmits this detection signal to described electromagnetism sensing loop, and detects this detection signal and judge position, distance, touching height and the touch points that occurs in the electromagnetic induction loop and change with numerical operation.
Beneficial effect of the present invention is: the present invention utilizes originally existing data line and gate line, sweep trace, boost line, or the common-battery polar curve etc., wire as induction user position of touch, and cooperate the emission of at least one wire to detect signal, at least another wire receives the mode that detects signal and comes the parameters such as the electric charge of sensing wire, electric capacity, magnetic flux, electromagnetic induction, voltage, electric current, frequency, and control module can be switched according to the display cycle of display module the keying of grounding switch, can reach display frame and touch-control and scan optimized control.
Description of drawings
Fig. 1 is the circuit diagram of the existing self-tolerant sensitive display of explanation;
Fig. 2 is the first preferred embodiment of the touch-control sensing display of explanation alternating expression driving;
Fig. 3 is the circuit structure of touch-control sensing module in explanation the first preferred embodiment;
Fig. 4 is the in-built diagrammatic cross-section of display module in explanation the first preferred embodiment;
Fig. 5 is the alternating expression driving method of touch-control sensing display in explanation the first preferred embodiment;
Fig. 6 is the shape and structure of explanation the first image and the second image;
Fig. 7 is the diagrammatic cross-section of touch-control sensing display in explanation the first preferred embodiment;
Fig. 8 is the second preferred embodiment of the touch-control sensing display of explanation alternating expression driving, and wherein display module is marginal electric field framework;
Fig. 9 is that the explanation display module is another circuit diagram of marginal electric field framework; And
Figure 10 is that the explanation display module is the circuit diagram of horizontal cross electric field.
Embodiment
The present invention is described in detail below in conjunction with drawings and Examples.
Consult Fig. 2, the first preferred embodiment of the touch-control sensing display that drives for alternating expression of the present invention, this touch-control sensing display 100 is the capacitance touching control sensitive display, be available for users to the sensor signal via finger (finger) touching (touch), write character, picture with execution, perhaps the portrait (icon) in the picture is carried out the actions such as instruction.Touch-control sensing display 100 comprises a touch-control sensing module 10, a display module 20 in order to display frame, one in order to 20 display frames of control display module and is coupled to the control module 30 of touch-control sensing module 10, and one is coupled to control module 30 and the backlight (black light) 40 in order to light source to be provided.Certainly, touch-control sensing display 100 also can be liquid crystal display, Organic Light Emitting Diode, electronics swimming method display, electric wetting display.
Consult Fig. 3, touch-control sensing module 10 comprises several first direction wires 1, several second direction wires 2, an insulation course (insulating layer also can be dielectric layer) (not shown) and a sensing cell 4.First direction wire 1 and second direction wire 2 are the common structure wire on the active array, and in the present embodiment, first direction wire 1 is that data line (data line) and quantity are the M bar, and M is the positive integer greater than 1, and with X
1～X
MExpression, the live width of every first direction wire 1 is 4～10 μ m, the spacing of per two first direction wires 1 is 30～100 μ m and mutually equidistantly extends side by side and with a first direction (namely vertical).Second direction wire 2 is that gate line (gate line) and quantity are the N bar, and N is the positive integer greater than 1, and with Y
1～Y
NExpression, the spacing of the live width of every second direction wire 2 and per two second direction wires 2 is respectively 4～10 μ m and 30～100 μ m, and described second direction wire 2 is mutually equidistant side by side and with second direction (namely horizontal) extension of intersecting with first direction.Insulation course makes second direction wire 2 and first direction wire 1 interlaced but be not conducted, and forms the induction matrix of one M * N between described first direction wire 1 and described second direction wire 2.
What specify is, first direction wire 1 is not limited in and is data line, second direction wire 2 also is not limited only to be gate line, first direction wire 1 can be gate line and second direction wire 2 can be data line, or in the framework of specific touch-control sensing display 100, for example: low temperature compound crystal silicon film liquid crystal display (LTPS-TFT-LCD) or active matrix Organic Light Emitting Diode (Active Matrix Organic Light Emitting Diode, AMOLED) display etc., first direction wire 1 and second direction wire 2 can be or improve from the common-battery polar curve, power lead (power line), read line, bias line, control line, the part pixel circuit, the part auxiliary circuit, the auxiliary picture element of part, auxiliary traverse, compensating circuit, the signal control line of compensating circuit element, boost lines etc. are not limited with the present embodiment.
Consult Fig. 2 and Fig. 3, sensing cell 4 comprises that one is coupled to the first sensing circuit 41 of an end of described first direction wire 1, and second sensing circuit 42 that is coupled to an end of described second direction wire 2, the first sensing circuit 41 and the second sensing circuit 42 are in order to emission and receive one and detect signal (or claiming to stimulate signal), with sensing should detect signal through parameters such as electric charge, electric capacity, magnetic flux, electromagnetic induction or the voltage in path, electric current, frequencies.
Control module 30 comprises that first driving circuit 301, that is coupled to the other end of described first direction wire 1 is coupled to the second driving circuit 302 of the other end of described second direction wire 2, an and control circuit 303 that is coupled to sensing cell 4, the first driving circuit 301 and the second driving circuit 302 are respectively source electrode driver (source driver) and gate pole driver (gate driver), its start and function are same as the prior art, therefore do not add to give unnecessary details.Control circuit 303 is in order to control sensing cell 4 and other electronic component starts, and rear explanation is held in its thin section control.
Consult Fig. 4, display module 20 includes one first polaroid (polarizer) 201, a first substrate (substrate) 202, a pixel array layer (pixel layer) 203, one liquid crystal layer 204, a common electrode layer (common electrodes layer) 205, one colored filter (color filter) 206, one second substrate 207 and one second polaroid 208 of sequentially arranging, and a grounding switch 209 that is coupled between common electrode layer 205 and the ground.
In the present embodiment, first direction wire 1 and second direction wire 2 are laid in pixel array layer 203.The control of grounding switch 209 controlled circuit 303 and opening and closing is switched common electrode layer 205 between suspension joint (floating) and ground connection.Benly being, having more than to be limited in this what is called " ground connection " and receive ground, also can be to be couple to a large electric capacity, a large conductor or metal shell etc.
In addition, the structure of the display module 20 of the present embodiment is not limited with above-mentioned, it can be Organic Light Emitting Diode (Organic Light Emitting Diode, OLED) panel, active matrix Organic Light Emitting Diode (Active Matrix Organic Light Emitting Diode, AMOLED) panel, penetration, reflective or display pannel that the partial penetration part is reflective etc.And first direction wire 1 and second direction wire 2 also are not limited to be laid on the pixel array layer 203, also can be laid in first substrate 202 inboards or the outside, or second substrate 207 inboards or the outside, and it can cooperate different panel kinds and change the position of laying.
Consult Fig. 3, Fig. 4 and Fig. 5, Fig. 5 is the alternating expression driving method of the touch-control sensing display 100 of the present embodiment, this driving method is to show a picture frame (frame) as example take display module 20, and display module 20 shows that the cycle of a picture frame can be divided into during the demonstration and a during sensing.
At first, when display module 20 is during showing, the grounding switch 209 that control circuit 303 can switch first in the display module 20 is conducting state, so that common electrode layer 205 is able to ground connection (step S10), then the first driving circuit 301 and 302 runnings of the second driving circuit and driving display module 20 display frames (step S20), so can avoid the noise of common electrode layer 205 to disturb, to obtain better picture quality.And when display module 20 enters during sensing, control circuit 303 switches first grounding switch 209 and is nonconducting state, so that common electrode layer 205 is suspension joint (step S30), then sensing cell 4 carries out touch-control scanning (step S40) for each bar first direction wire 1 and second direction wire 2.
In other words, the keying that control module 30 meetings are switched grounding switch 209 according to the display cycle of display module 20, scan optimized control to reach display frame and touch-control, and at display module 20 during in during sensing, control circuit 303 also can cut out backlight 40 (or point is dark).In addition, in the present embodiment, display module 20 is to replace and repeatedly switch with display frame and touch-control sensing during showing and between the during sensing, that is to say when 100 running of touch-control sensing display, can constantly repeat above-mentioned steps S10～S40, make common electrode layer 205 be suspension joint or ground connection during the difference so that grounding switch 209 can cooperate.
Yet, in step S40, the touch control inducing method that sensing cell 4 drives for each bar first direction wire 1 and second direction wire 2 performed alternating expressions, mainly be to detect signal from least one first direction wire 1 (or second direction wire 2) emission one, and receive this detection signal from another first direction wire 1 (or second direction wire 2) at least, with parameters such as the electric charge of this first direction wire 1 of sensing (or second direction wire 2), electric capacity, magnetic flux, electromagnetic induction, voltage, electric current, frequencies.
The method of sensing cell 4 induction user finger touches positions can have following several:
Consult Fig. 3, the first induction mode is that sensing cell 4 (for example: X is selected a first direction wire 1
1) emission detection signal, and from another first direction wire 1 (for example: X
2) receive this detection signal, can respond to first direction wire X
2Signal change, then follow same mode, again from first direction wire X
2Emission detects signal, from first direction wire X
3Receive and detect signal by that analogy, the signal that can respond to all first direction wires 1 changes.In other words, in a very first time, sensing cell 4 can be from first direction wire X
1Emission detects signal, and from first direction wire X
2Receive this detection signal, then in one second time, sensing cell 4 can be from first direction wire X
2Emission detects signal, and from first direction wire X
3Receive this detection signal, the parameters such as the electric charge of sequentially each first direction wire 1 of sensing like this, electric capacity, magnetic flux, electromagnetic induction, voltage, electric current, frequency, until the M-1 time, from first direction wire X
M-1Emission detects signal, and from first direction wire X
MReceive this detection signal.
The second induction mode is that sensing cell 4 (for example: X is selected a first direction wire 1
1) emission detection signal, and from other several first direction wires 1 (for example: X
2～X
5) receive this detection signal, so the mode of " single emission, many receptions " can be responded to the signal variation of all first direction wires 1 equally.
The third induction mode is that sensing cell 4 (for example: X is selected several first direction wires 1
1～X
4) emission detection signal, and from an other first direction wire 1 (for example: X
5) receive this detection signal, so the mode of " many emissions, single reception " also can be responded to the signal variation of all first direction wires 1.
The 4th kind of induction mode is that sensing cell 4 (for example: X is selected several first direction wires 1
1～X
2) emission detection signal, and from several other first direction wires 1 (for example: X
3～X
4) receive this detection signal, in other words, several first direction wires 1 can be divided into several wire groups, and sensing cell 4 (for example: X can be selected first one first wire group
1～X
2) emission detection signal, and from one second wire group (for example: X
3～X
4) receive and detect signal, penetrate the detection signal from this second wire mass-sending more afterwards, and from a privates group (for example: X
5～X
6) receive and detect signal, penetrate the detection signal from this privates mass-sending more afterwards, and from a privates group (for example: X
7～X
8) receive and detect signal; Or, (for example: X select first one first wire group
1～X
2) emission detection signal, and from one second wire group (for example: X
3～X
4) receive and detect signal, afterwards again from a privates group (for example: X
5～X
6) emission detection signal, and from a privates group (for example: X
7～X
8) receive and detect signal; Or, (for example: X select first one first wire group
1～X
2) emission detection signal, and from a privates group (for example: X
5～X
6) receive and detect signal, afterwards again from one second wire group (for example: X
3～X
4) emission detection signal, and from a privates group (for example: X
7～X
8) receive and detect signal, so the mode of " many emissions, many receptions " also can be responded to the signal variation of all first direction wires 1.In addition, above-mentioned these at least four wire groups, wherein, but the first direction wire part among this first wire group, this second wire group, this privates group and these privates group is overlapping, overlapping or non-overlapping, be that the direction wire can belong to the different conductor group simultaneously, and same wire group can be not choice direction wire sequentially, can be X such as the first wire group
1, X
3
The 5th kind of induction mode and the 4th kind of induction mode are all the mode of " many emissions; many receptions ", different is, the described first direction wire 1 of sensing cell 4 emission detection signals can be at least part of interlaced with each other with the described first direction wire 1 that receives the detection signal, and for example: sensing cell 4 is selected first direction wire X
1And first direction wire X
3Emission detects signal, selects first direction wire X
2, first direction wire X
4And first direction wire X
5Receive and detect signal, the signal that so can respond to equally all first direction wires 1 changes.In addition, consult Fig. 6, the first direction wire 1 that emission detects signal has one first image, the first direction wire 1 that detects signal then can have one second image, certainly first and second direction wire 1,2 two dimensional image can also three-dimensional structure replace, described the first image and described the second image can be strip, rhombus, the various shapes such as latticed and square, also can be the combination of various shapes or shape, and the present embodiment is matrix form, and both shapes can be identical, also can be not identical.
Because the density higher (being that wire pitch only has 30～100 μ m) that the first direction wire 1 of the present embodiment and second direction wire 2 are laid, the user can be contained several first direction wires 1 and second direction wire 2 when finger touches panel (display module 20), therefore, in the above-mentioned various induction mode, the first direction wire 1 (or second direction wire 2) that the first direction wire 1 (or second direction wire 2) of emission detection signal and reception detect signal is at least one first direction wire 1 (or second direction wire 2) separately, and for example: sensing cell 4 is selected first direction wire X
1Emission detects signal, and selects first direction wire X
4Receive and detect signal, afterwards again from first direction wire X
4Emission detects signal, from first direction wire X
7Receive and detect signal by that analogy, the signal that not necessarily needs to respond to all first direction wires 1 changes, to save scanning times and time, can make too sensing cell 4 computings judge the position of user's finger touches display module 20, distance, touching height and touch points.In addition, above-mentioned various induction modes are equally applicable to the sensing of second direction wire 2, therefore seldom give unnecessary details.
Cooperate and consult Fig. 4,5, carry out before the touch-control scanning common electrode layer 205 being suspension joint at sensing cell 4, more carefully say the interference that when receiving the detection signal, is subject to common electrode layer 205 for fear of sensing cell 4, therefore needed only before receiving the detection signal common electrode layer 205 suspension joints, that is to say when display module 20 during in during sensing, sensing cell 4 can utilize first above-mentioned wherein a kind of induction mode emission to detect signal, then just to switch grounding switch 209 be that nonconducting state is to be common electrode layer 205 suspension joint to control circuit 303, receive again afterwards and detect signal, so can reach equally the effect of touch-control scanning Optimization control.
Consult Fig. 2; 7; the touch-control sensing display 100 of the present embodiment also comprises one for touch-control sensing module 10; display module 20; control module 30; backlight 40 (because the relation of size; touch-control sensing module 10 and control module 30 are omitted in Fig. 7); and be arranged at the housing 50 of backlight 40; this housing 50 comprises the protection panel 51 of the corresponding display module 20 in a position; in the present embodiment; protection panel 51 is a loam cake moulding sheet (Cover Glass); its moulding can be ellipse; approximate rectangular; polygon; circular arc type etc.; and its area is greater than the viewing area of display module 20; the sensing cell 4 of touch-control sensing module 10 is to be laid between protection panel 51 and the display module 20; or be laid on the sidewall of protection panel 51 away from display module 20; or be laid in (protection panel 51 can be several layers of structure) among the protection panel 51; to reduce the integral thickness of touch-control sensing display 100, reduce cost of manufacture.
Consult Fig. 8, the second preferred embodiment of the touch-control sensing display that drives for alternating expression of the present invention, in the present embodiment, display module 20 is integrated in marginal electric field (the Fringe Filed Switching of same layer for pixel array layer 203 and common electrode layer 205 (such as Fig. 4), FFS) framework, and the present embodiment is as the induction call wire 6 that is used for touch-control scanning with common-battery polar curve (common electrode).
The overall architecture of the touch-control sensing display 100 of the present embodiment as shown in Figure 2, comprise equally a touch-control sensing module 10, a display module 20 in order to display frame, one in order to 20 display frames of control display module and be coupled to the control module 30 of touch-control sensing module 10, and one is coupled to control module 30 and the backlight 40 in order to light source to be provided.Touch-control sensing module 10 comprises several interlaced but disjoint first direction wires 1 and second direction wire 2 (only drawing first direction wire 1 among Fig. 8), one sensing cell 4, one induction call wire 6, and several respectively correspondence be coupled to described first direction wire 1 and induction call wire 6, second direction wire 2 and the on-off circuit 7 of responding to call wire 6, each on-off circuit 7 is used to one and makes described first direction wire 1 and the conducting state that is electrically connected of induction call wire 6, and one makes described first direction wire 1 switch with responding between the nonconducting state that call wire 6 is not electrically connected.
Consult Fig. 3, Fig. 4 and Fig. 8, alternating expression driving method and first preferred embodiment of the touch-control sensing display 100 of the present embodiment are similar, display module 20 shows that the cycle of a picture frame is divided into during the demonstration and a during sensing equally, and the during sensing of the present embodiment can be further divided into a capacitance touching control between sensitive period and during the electromagnetism touch-control sensing, control module 30 at first can be in display module 20 for during showing the time, with grounding switch 209 conductings, so that common electrode layer 205 is able to ground connection; And the capacitance touching control that enters during sensing (grounding switch 209 for nonconducting state) when display module 20 is between sensitive period the time, sensing cell 4 can be carried out the method such as the described induction of the first preferred embodiment user finger touches position, namely five kinds of induction modes are wherein a kind of, and control module 30 can cooperate sensing cell 4 emissions and reception to detect the first direction wire 1 (or second direction wire 2) of signal and corresponding switch circuit 7 is switched to nonconducting state, so that the electric charge of the described first direction wire 1 of sensing cell 4 sensings (or second direction wire 2), electric capacity, magnetic flux, electromagnetic induction, voltage, electric current, the parameters such as frequency, judge that with numerical operation the user because of finger touches display module 20 position that induction changes occurs, distance, touching height and touch points reach the effect that touch-control of the present invention scans Optimization control.
And during the electromagnetism touch-control sensing time, control module 30 is with on-off circuit 7 conductings of at least two first direction wires 1 of correspondence, so that this two first directions wire 1 is electrically connected induction call wire 6 and forms an electromagnetism sensing loop, so that sensing cell 4 can detect signal from first direction wire 1 emission wherein, and receive from first direction wire 1 wherein and to detect signal, judge the position that occurs in the electromagnetic induction loop and change, distance, touching highly and touch points with numerical operation.In more detail, the present embodiment is that described first direction wire 1 (or second direction wire 2) is divided into several wire groups, wherein each wire group comprises at least two first direction wires 1 (or second direction wire 2), and control module 30 is according to an order, according to a determining deviation, sequentially conducting correspondence is this wire group's on-off circuit 7 respectively, to form several electromagnetism sensing loops, so that sequentially transmitting, sensing cell 4 detects signal to described electromagnetism sensing loop, to judge position, distance and the touch points etc. of electromagnetism pointer.
What specify is, the quantity of the on-off circuit 7 of the present embodiment not necessarily needs corresponding with the quantity of first direction wire 1 (or second direction wire 2), also can be as shown in Figure 9, several first direction wires 1 (or second direction wire 2) are electrically connected on an on-off circuit 7, so that sensing cell 4 detects signal to described first direction wire 1 (or second direction wire 2) emission or reception simultaneously.In addition, the display module 20 of the present embodiment also can be horizontal cross electric field (In Plan Switching, IPS) framework as shown in figure 10, can reach equally the Optimization control of touch-control scanning.Moreover display module comprises that one intends picture element region (dummy pixel region, figure does not show), and described on-off circuit 7 then is arranged in this plan picture element region, more to save the space configuration, reduces cost of manufacture.
In sum, data line and gate line that the touch-control sensing display utilization that alternating expression of the present invention drives is originally existing, or the common-battery polar curve is as the wire of induction user position of touch, and cooperating at least one wire emission to detect signal, another wire receives five kinds of modes that detect signal and comes the parameters such as the electric charge of sensing wire, electric capacity, magnetic flux, electromagnetic induction, voltage, electric current, frequency at least.In addition, control module 30 also can be switched according to the display cycle of display module 20 keying of grounding switch 209, scans optimized control to reach display frame and touch-control, therefore really can reach purpose of the present invention.
Claims (32)
1. the touch control inducing method that drives of an alternating expression, sensing cell in a touch sensing element is carried out, this sensing cell is coupled to several mutually side by side and the first direction wire that extends along a first direction, this touch control inducing method is characterised in that: detect signal from least one first direction wire emission one, and receive this detection signal from another first direction wire at least, with at least a parameter in electric charge, electric capacity, magnetic flux, electromagnetic induction, voltage, electric current and the frequency of the described first direction wire of sensing.
2. the touch control inducing method that drives of alternating expression according to claim 1, it is characterized in that: this inducing method is to launch this detection signal from several first direction wires, and receives this detection signal from other several first direction wires.
3. the touch control inducing method that drives of alternating expression according to claim 2 is characterized in that: at least part of interlaced with each other, the adjacent or determining deviation apart of the first direction wire of the first direction wire of this detections signal of described emission and this detection signal of described reception.
4. the touch control inducing method that drives of alternating expression according to claim 1, it is characterized in that: described first direction wire is to be divided into several wires group, wherein each wire group comprises at least two first direction wires, this method for sensing is for being to penetrate this detection signal from the mass-sending of a wire wherein, and receive this detection signal from another wire group wherein, and detect this detection signal and judge the position that occurs in induction line and change, distance, touching highly and touch points with numerical operation.
5. the touch control inducing method that drives of alternating expression according to claim 1, it is characterized in that: this sensing cell also is coupled to several mutual second direction wires side by side, and extend with a second direction that intersects with this first direction, described second direction wire and described first direction wire be interlaced to have angle but is not conducted.
6. the touch control inducing method that drives of alternating expression according to claim 5, it is characterized in that: this inducing method is to launch this detection signal from several incomplete adjacent first direction wires, and receives this detection signal from other several incomplete adjacent second direction wire; Or launch this detection signal from several incomplete adjacent second direction wires, and receive this detection signal from other several incomplete adjacent first direction wire.
7. the touch control inducing method that drives of alternating expression according to claim 4, it is characterized in that: described first direction wire is to be divided at least four wire groups, this method for sensing is to penetrate this detection signal from the mass-sending of one first wire first, and receive this detection signal from one second wire group, penetrate this detection signal from this second wire mass-sending more afterwards, and receive this detection signal from a privates group, penetrate this detection signal from this privates mass-sending more afterwards, and receive this detection signal occurs in the induction line variation with the numerical operation judgement position from a privates group, distance, touching height and touch points.
8. the touch control inducing method that drives of alternating expression according to claim 4, it is characterized in that: described first direction wire is to be divided at least four wire groups, this method for sensing is to penetrate this detection signal from the mass-sending of one first wire first, and receive this detection signal from one second wire group, penetrate this detection signal from privates mass-sending more afterwards, and receive this detection signal from a privates group, judge position, distance, touching height and the touch points that occurs in induction line and change with numerical operation.
9. the touch control inducing method that drives of alternating expression according to claim 4, it is characterized in that: described first direction wire is to be divided at least four wire groups, this method for sensing is to penetrate this detection signal from the mass-sending of one first wire first, and receive this detection signal from a privates group, penetrate this detection signal from the mass-sending of one second wire more afterwards, and receive this detection signal from a privates group, judge position, distance, touching height and the touch points that occurs in induction line and change with numerical operation.
10. the touch control inducing method that the described alternating expression of arbitrary claim drives according to claim 7～9 is characterized in that: but the first direction wire part among this first wire group, this second wire group, this privates group and these privates group is overlapping, overlapping or non-overlapping.
11. the touch-control sensing module that alternating expression drives is characterized in that:
The touch-control sensing module that this alternating expression drives comprises:
Several first direction wires, described first direction wire extends mutually side by side and with a first direction;
One can carry out the sensing cell of the touch control inducing method that each alternating expression such as 1～10 of claim the drives, be coupled to described first direction wire, with the electric charge that detects this first direction wire, electric capacity, magnetic flux, electromagnetic induction, voltage, electric current, and frequency at least a parameter.
12. the touch-control sensing module that alternating expression according to claim 11 drives is characterized in that: the first direction wire that this emission detects signal has one first image, structure, and the first direction wire that this detection detects signal has one second image, structure.
13. the touch-control sensing module that alternating expression according to claim 12 drives is characterized in that: described the first image, structure and described the second image, structure is identical or not identical.
14. the touch-control sensing module that alternating expression according to claim 13 drives is characterized in that: described the first image, structure or described the second image, structure can be the combination of strip, rhombus, latticed, square or described shape.
15. the touch-control sensing module that the described alternating expression of arbitrary claim drives according to claim 11～14, it is characterized in that: the touch-control sensing module that this alternating expression drives also comprises the second direction wire that several are coupled to this sensing cell, described second direction wire mutually extends side by side and with a second direction that intersects with this first direction, and described second direction wire and described first direction wire be interlaced to have angle but be not conducted.
16. the touch-control sensing module that alternating expression according to claim 15 drives, it is characterized in that: described first direction wire and described second direction wire are the common structure wire on the active array.
17. the touch-control sensing module that alternating expression according to claim 16 drives is characterized in that: described first direction wire and described second direction wire can be or improve several data lines on this active array, gate line, common-battery polar curve, boost line, bias line, read line etc.
18. the touch-control sensing display that alternating expression drives is characterized in that:
The touch-control sensing display that this alternating expression drives comprises:
One display module is in order to display frame;
One touch-control sensing module comprises several mutual first direction wire and sensing cells side by side; And
One control module, be coupled to this touch-control sensing module, this control module is controlled this display module during one shows the time, and in a capacitance touching control during sensing, the touch control inducing method that this sensing cell is carried out as 1～10 each described alternating expression of claim the drives is with electric charge, electric capacity, magnetic flux, electromagnetic induction, voltage, the electric current of the described first direction wire of sensing, reach at least a parameter in the frequency.
19. the touch-control sensing display that alternating expression according to claim 18 drives, it is characterized in that: this touch-control sensing module also comprises an induction call wire, and several are coupled to the on-off circuit of described first direction wire and this induction call wire, described on-off circuit is used to a conducting state that described first direction wire is electrically connected with this induction call wire, and one make between described first direction wire and nonconducting state that this induction call wire is not electrically connected and switch, during an electromagnetism touch-control sensing, this control module with the on-off circuit conducting of at least two first direction wires of correspondence so that this two first directions wire is electrically connected this induction call wire, to form an electromagnetism sensing loop.
20. the touch-control sensing display that alternating expression according to claim 19 drives, it is characterized in that: this touch-control sensing module comprises that also several are coupled to the second direction wire of this sensing cell, described second direction wire mutually extends side by side and with a second direction that intersects with this first direction, and described second direction wire and described first direction wire be interlaced to have angle but be not conducted.
21. the touch-control sensing display that alternating expression according to claim 20 drives, it is characterized in that: described first direction wire and described second direction wire are the common structure wire on the active array.
22. the touch-control sensing display that alternating expression according to claim 21 drives is characterized in that: described first direction wire and described second direction wire can be several data lines on this active array, gate line, common-battery polar curve, boost line, bias line, read line etc.
23. the touch-control sensing display that alternating expression according to claim 20 drives, it is characterized in that: this display module comprises a first substrate and a second substrate, this touch-control sensing module can be located at this first substrate inboard, this first substrate outside, this second substrate inboard, and the position in this second substrate outside.
24. the touch-control sensing display that alternating expression according to claim 18 drives, it is characterized in that: this touch-control sensing display can be liquid crystal display, Organic Light Emitting Diode, electronics swimming method display, electric wetting display.
25. the touch-control sensing display that alternating expression according to claim 18 drives, it is characterized in that: this touch-control sensing display also comprises a housing, and one be located in this housing and be coupled to the backlight of this control module, this control module can be during this electromagnetism touch-control sensing, this capacitance touching control closes this backlight or put dark between sensitive period, and during this shows this backlight is opened.
26. the touch-control sensing display that alternating expression according to claim 25 drives is characterized in that: this housing comprises a protection panel, and described first direction wire and described second direction wire are positioned at this protection panel.
27. the touch-control sensing display that alternating expression according to claim 18 drives, it is characterized in that: the first direction wire that this emission detects signal has one first image, structure, and the first direction wire that this detection detects signal has one second image, structure.
28. the touch-control sensing display that alternating expression according to claim 27 drives is characterized in that: described the first image, structure or described the second image, structure can be the combination of strip, rhombus, latticed, square or described shape.
29. the touch-control sensing display that alternating expression according to claim 20 drives, it is characterized in that: described first direction wire is divided into several wire groups, wherein each wire group comprises at least two first direction wires, this control module is according to an order, according to a determining deviation, sequentially conducting correspondence is this wire group's on-off circuit respectively, to form several electromagnetism sensing loops, and this sensing cell sequentially transmits this detection signal to described electromagnetism sensing loop, and detects this detection signal and judge the position that occurs in the variation of electromagnetic induction loop with numerical operation, distance, touching height and touch points.
30. according to claim 20 or the touch-control sensing display that drives of 29 described alternating expressions, it is characterized in that: described second direction wire is divided into several wires group, wherein each wire group comprises at least two second direction wires, this control module is according to an order, according to a determining deviation, sequentially conducting correspondence is this wire group's on-off circuit respectively, to form several electromagnetism sensing loops, and this sensing cell sequentially transmits this detection signal to described electromagnetism sensing loop, and detects this detection signal and judge the position that occurs in the variation of electromagnetic induction loop with numerical operation, distance, touching height and touch points.
31. the touch-control sensing display that alternating expression according to claim 18 drives is characterized in that: this display module comprises that one intends the picture element zone, and described on-off circuit is arranged at this plan picture element zone.
32. the touch-control sensing display that alternating expression according to claim 18 drives, it is characterized in that: this display module comprises a common electrode layer, and this display also comprises one and is coupled to this common electrode layer and ground, or with large conductor, or and large electric capacity object between grounding switch, this control module is controlled this not conducting of grounding switch when this sensing cell receives this detection signal, make this common electrode layer earth-free, or do not connect large conductor, or do not connect large electric capacity object, this control module is when this display module display frame, control this grounding switch conducting, to form common electrode ground connection, or connect large conductor, or connect large electric capacity object.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100137312A TWI596515B (en) | 2011-10-14 | 2011-10-14 | Touch sensing method with interlacing driving scheme, touch sensing module and display |
| TW100137312 | 2011-10-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103049130A true CN103049130A (en) | 2013-04-17 |
| CN103049130B CN103049130B (en) | 2018-02-09 |
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|---|---|---|---|
| CN201210385790.0A Expired - Fee Related CN103049130B (en) | 2011-10-14 | 2012-10-12 | Staggered driving touch sensing method, touch sensing module and display |
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|---|---|
| CN (1) | CN103049130B (en) |
| DE (1) | DE102012218635A1 (en) |
| TW (1) | TWI596515B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| TW201316214A (en) | 2013-04-16 |
| CN103049130B (en) | 2018-02-09 |
| TWI596515B (en) | 2017-08-21 |
| DE102012218635A1 (en) | 2013-04-18 |
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